Legal analysis: China does not stipulate the patent validity period of drugs. Only the period of validity of the patent is specified. Patents are divided into inventions, utility models and designs. The protection period of inventions is 20 years, and that of utility models and designs is 10 year. From the date of application.
Legal basis: In Article 42 of the Patent Law, the term of invention is 20 years, the utility model is 10 year, and the design is 15 year, all of which are counted from the date of filing.